Vortex Sound Research

Hello friends. I have Audio Damage's Tattoo drum synth and am looking for something more powerful. The two that I'm looking at are Battery and Spark and was wondering if anyone had experience with both? I'm also wondering about incorporating them with Maschine Mikro and Sparkle and how the value pans out there. Any feedback would be appreciated, if you love another drum VST, please feel free to mention it. Thanks.